{"id":"CVE-2026-73436","title":"On affected platforms running Arista EOS with OSPFv2 and OSPFv2 segment routing configured, a specially crafted OSPFv2 packet from an adjacent OSPF neighbor may cause OSPF to restart unexpectedly.","summary":"On affected platforms running Arista EOS with OSPFv2 and OSPFv2 segment routing configured, a specially crafted OSPFv2 packet from an adjacent OSPF neighbor may cause OSPF to restart unexpectedly.","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-125","CWE-1284"],"vendor":"Arista Networks","product":"EOS","affected":["EOS >= 4.36.0F <= 4.36.1F","EOS >= 4.35.0F <= 4.35.5M","EOS >= 4.34.0F <= 4.34.7.1M","EOS >= 4.33.0F <= 4.33.9M","EOS >= 1.0.0 < 4.33.0F"],"published":"2026-09-16","updated":"2026-09-16","sourceUpdated":"2026-09-16T19:08:50.420","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-73436","references":[{"url":"https://www.arista.com/en/support/advisories-notices/security-advisory/24727-security-advisory-0171","label":"psirt@arista.com"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-16T13:50:10.659104Z"},"ingestedAt":"2026-09-16T09:53:11.603Z","epss":0.00234,"epssPercentile":0.14565,"slug":"CVE-2026-73436","body":"## Overview\n\nOn affected platforms running Arista EOS with OSPFv2 and OSPFv2 segment routing configured, a specially crafted OSPFv2 packet from an adjacent OSPF neighbor may cause OSPF to restart unexpectedly.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}